The DCF-TM-25/400P-08 is a large-mode-area (LMA), double-clad, thulium-doped fiber featuring an optimized pedestal core design for high-power operation in the 1.9 – 2.1 µm wavelenght range. With a 25 µm core and a 400 µm pump cladding, it delivers excellent beam quality, high brightness, and efficient pump absorption, making it an ideal gain medium for high-power fiber lasers and amplifiers.
LMA Tm doped fiber
DCF-TM-25/400P-08
Description
Features & Benefits
- Octogonal cladding shape
- High and constant pump absorption
- Tested at >100 kpsi to ensure long-term reliability during winding
- Strong power scaling capability
Applications
- Medical precision
- High brightness laser systems
- Coherent sensing
- Mid-IR pumping
- Directed energy and advanced research
Optical fiber specifications
Optical
Cladding Absorption @ 790 nm (dB/m)
3.9 ± 0.6
Numerical Aperture-Cladding
Min 0.45
Numerical Aperture-Core
0.085 ± 0.01
Geometrical & Mechanical
Cladding diameter (µm)
400 ± 10
Cladding geometry
Oct.
Coating Diameter (µm)
25 ± 1
Core Ovality (%)
<= 8
Core/Cladding Concentricity Error (µm)
<= 2
Proof test (kpsi)
>= 100
Environmental
Storage Temperature (°C)
-40 to +85
